Senior Associate - Attorney at law

Olivier Marquais

Olivier Marquais, senior associate, is an attorney-at-law in the Litigation & Risk Management Practice Group of our Luxembourg office. He focuses on financial and asset management disputes (litigation and arbitration).

About Olivier Marquais 

Olivier’s practice includes contract drafting and negotiation, pre-contentious and contentious matters. He has substantial experience advising on, and representing clients in, complex, high value cross-border contracts and disputes related to the loss of investments (creditors and shareholders’ claims and the defense of financial institutions, management companies and investment funds) and asset recovery proceedings (enforcement of foreign judgments and awards, attachment/seizure of assets and insolvency/bankruptcy proceedings).

Olivier regularly accepts speaking engagements on legal issues arising from the use of distributed ledger technology (blockchain) including data protection, smart (legal) contracts and dispute resolution. 

Olivier is a member of the Loyens & Loeff Fintech Team and the Digital Economy Team, is active in the APAC region and visits the Singapore office of Loyens & Loeff. 


  • Luxembourg (List IV), 2019
  • New York Bar, 2015
  • Paris Bar, 2015
  • Ontario Bar, 2014
  • Quebec Bar, 2014


  • Quebec Bar School, University of Ottawa (Canada), 2013
  • Bachelor of Common Law, J.D. (Cum laude), University of Ottawa (Canada), 2012
  • Bachelor of Civil Law, LL.L. (Summa cum laude), University of Ottawa (Canada), 2012
  • Master’s in Public International Law, LL.M. (With Distinction), University of Kent (Brussels, Belgium), 2008


  • French
  • English
  • Spanish

T: +352 466 230 242
E: [email protected]